Microfinance

Microfinance is the provision of small loans, savings, and related financial services to low-income households and small businesses that formal banks won't serve. It replaces the bank's usual test — collateral, payslips, credit history — with methods that work where those things don't exist: small amounts, short terms, frequent repayments, and trust built through group membership or repeat borrowing.

The word covers both an activity and an industry. As an activity, it's simply lending small sums to people the banking system has priced out. As an industry, it's the network of microfinance institutions (MFIs), savings and credit cooperatives (SACCOs), microfinance banks, NGOs, and independent money lenders who do that lending — often the only formal credit available in the markets they serve.

Why microfinance exists

A bank's lending model is built around a fixed cost per loan. Assessing a borrower, drawing up an agreement, disbursing funds, and following up on repayment costs roughly the same whether the loan is 500 or 500,000. On a large loan, that cost disappears into the margin. On a small one, it swallows it. The result is that conventional banks stop lending below a certain size, not out of prejudice but out of arithmetic.

Add to that the collateral requirement. Most low-income borrowers have no title deed, no registered vehicle, and no formal employment record. They may run a profitable trading business, but nothing about it is documented in a form a bank credit committee recognises.

Microfinance is the set of techniques developed to lend into that gap profitably. The best-known origin story is Muhammad Yunus and Grameen Bank in 1970s Bangladesh, which demonstrated that very poor borrowers — women in particular — repaid reliably when the lending method fitted their circumstances. The model spread across South Asia, Latin America, and Africa, and has since diverged into many local forms.

What makes a microfinance loan different

Six features distinguish microfinance from conventional lending. Most microfinance lenders use some combination of them rather than all six.

Small principal. Loans are sized to a working-capital need — restocking a shop, buying seed, replacing a piece of equipment — not to a life purchase.

Short terms. Weeks to a year is typical. Short terms limit exposure and let the lender re-assess the borrower frequently.

Frequent repayments. Weekly, fortnightly, or monthly instalments that start soon after disbursement. This matches the daily or weekly cash cycle of a trader or smallholder far better than a single balloon payment, and it gives the lender an early signal when a borrower is slipping.

Alternative security. Instead of land or property, microfinance relies on group guarantees, household assets, savings held at the institution, salary undertakings through an employer, or the borrower's own repayment history.

Progressive lending. A borrower starts small, repays, and qualifies for a larger amount. The prospect of a bigger next loan is itself a repayment incentive, and it lets the lender build a credit record where none existed.

High-touch relationships. Loan officers visit businesses, know the market, and attend group meetings. Assessment is as much observational as documentary.

How the microfinance lending cycle works

A typical cycle runs through the same stages regardless of whether the lender is an MFI, a SACCO, or a small independent lending business:

1. Group formation or client intake. For group-based lending, borrowers self-select into a group and are trained on the rules. For individual lending, the officer takes the application and identification.
2. Assessment. The officer visits the business or home, estimates cash flow, and works out what the household can actually afford to repay — usually by observation and interview rather than from statements.
3. Approval. The file moves through a defined chain — loan officer, branch manager, and upward depending on the amount. The chain exists so that no single person can both originate and approve.
4. Disbursement. Funds go out by mobile money, bank transfer, or cash. Increasingly, mobile money is the default in East and Southern Africa because it removes the cash-handling risk entirely.
5. Repayment collection. Instalments come in on the agreed schedule. Each payment is applied in a fixed order, so that penalties and interest clear before principal.
6. Follow-up and recovery. Missed instalments trigger reminders, then officer visits, then group pressure or guarantor contact, then formal recovery. Speed matters more here than in any other kind of lending, because small arrears in a short-term loan become large arrears fast.
7. Repeat or exit. A borrower who repays cleanly is offered a larger loan. One who doesn't is closed out and, in a well-run institution, recorded so they aren't re-lent to under a different name.

Group lending and joint liability

The most distinctive microfinance mechanism is group lending. Borrowers form a group of typically five to twenty-five members. Each takes an individual loan, but the group carries joint liability: if a member defaults, the others are responsible for covering the shortfall, and none of them qualifies for a further loan until the group's account is clean.

This does three things at once. It transfers screening to the group — members won't admit someone they believe won't repay. It transfers monitoring to the group — neighbours know when a business is failing long before a loan officer would. And it creates enforcement through social cost rather than legal process, which matters where court recovery is slow and expensive relative to the loan size.

It also has limits worth naming. Group liability can push a struggling member into borrowing elsewhere to keep the group clean, which hides distress rather than resolving it. Groups can fracture. And as borrowers grow, they outgrow group sizes and want individual loans — which is why most maturing MFIs run both models side by side. For the lender, that means the system has to track group loans and individual loans in the same portfolio without treating one as a special case bolted onto the other.

Who provides microfinance

The category is broader than the name suggests, and the operational demands differ by type.

• Microfinance institutions (MFIs). Credit-focused lenders, sometimes deposit-taking, usually licensed and supervised. The core of the industry.
• SACCOs and credit unions. Member-owned. Members save, and loans are typically extended as a multiple of a member's shares or savings, with those savings serving as security. See SACCO.
• Microfinance banks. Licensed banks operating at the micro end, with deposit-taking and stricter capital and reporting requirements.
• NGO and donor-funded programmes. Often subsidised, frequently combining credit with training or agricultural inputs.
• Independent money lenders and small lending businesses. The largest group by number in most African markets. Owner-operated, a handful of staff, lending from own capital.
• Digital and mobile lenders. Algorithmic, instant, very small, very short — repayment behaviour on the mobile network stands in for credit history.
• Informal savings groups. Chilimba in Zambia, chama in Kenya, susu in West Africa — rotating savings and credit associations. Not microfinance institutions, but the same function, and often where a lender's borrowers first learn to save and repay on a schedule.

The economics: why microfinance interest rates look high

Microfinance interest rates are consistently higher than commercial bank rates, and this is the point where the model is most often misunderstood — including by borrowers and by policymakers.

The cost of running a loan is largely fixed. An officer's visit, the paperwork, the disbursement, and the follow-up cost about the same for a small loan as a large one. Spread that fixed cost over a small principal and a short term, and the rate required to break even is high in percentage terms even when the absolute amount of interest is modest. Add higher expected losses and, in many markets, an expensive cost of funds, and the arithmetic is unavoidable.

Two measures let you judge whether a rate is genuinely covering costs or simply extracting:

• Operational self-sufficiency (OSS) — operating income divided by operating expenses plus loan-loss provisions plus financing costs. Below 100%, the institution is running on subsidy or capital.
• Cost per borrower — total operating expense divided by active borrowers. It's the number that tells you whether efficiency is improving as you grow, or whether you're just adding staff at the same rate you add clients.

Interest rate caps are a recurring feature of the policy landscape. Their intent is borrower protection; their common effect is that lenders withdraw from the smallest and most remote loans first, because those are the ones that stop covering their costs.

The numbers a microfinance lender watches

Microfinance portfolios move faster than conventional ones — short terms, frequent instalments, high loan counts — so the reporting has to keep pace.

Portfolio at risk (PAR). The share of the outstanding portfolio with at least one instalment overdue past a threshold, usually 30 days. PAR 30 is the industry's standard health measure. Crucially, it counts the whole outstanding balance of an affected loan, not just the missed instalment — which is what makes it honest.

Aging buckets. Overdue amounts grouped by how late they are, typically 30, 60, and 90 days. The shape of the distribution tells you whether a problem is new or entrenched.

Loan loss provisioning. Setting aside expected losses against the portfolio, usually at rates rising with each aging bucket. Provisioning is what stops a portfolio from looking healthier on paper than it is.

Repayment rate and client retention. Retention is the underrated one. Progressive lending only works if good borrowers stay; a lender with excellent repayment and poor retention is losing exactly the clients its model depends on.

Average loan size and portfolio yield. Read together, these show whether the institution is drifting upmarket — lending larger amounts to safer borrowers — which is a legitimate strategy but a different one from the mission most MFIs state.

Where microfinance lenders get caught

The operational failure mode is almost always the same, and it's a consequence of the model rather than of bad management.

Microfinance is high-volume, low-value lending. A single officer may carry hundreds of active loans across dozens of groups, each with a weekly or fortnightly instalment. That's thousands of transactions a month in a small institution. Every one has to be recorded against the right loan, allocated in the right order, and reflected in the right branch's books.

Done on spreadsheets and receipt books, this holds up to a point and then stops. Balances drift. Two officers record the same repayment differently. A group's arrears sit unnoticed because nobody has run the numbers this week. The portfolio position — the one number that determines whether the institution is solvent — is only knowable after someone spends three days reconciling. By the time PAR is calculated, it's describing last month.

The pattern is worth naming clearly: in microfinance, the constraint on growth is rarely demand for loans or even capital. It's the administrative capacity to track what's already been lent. Institutions stall not because they run out of borrowers but because they run out of the ability to keep the book accurate.